PatentAuction.com lists patented inventions available for sale or licensing. Inventors can list their patented inventions (or patent pending) for sale. New inventions for sale are added on a daily basis !
Home    List your patent    My account     Help     Support us    

FLAT COMPASS FOR MARKING LARGE ARCSAND CIRCLES

[Category : - Educational- Tools]
[Viewed 1722 times]

An improvement in a compass that marks large radius arcs is disclosed. The compass is for marking on flat surfaces like the ground and walls where higher degree of accuracy for the radius or circle is desired. More particularly, the present flat compass allows a person to create a virtually unlimited radius arc using a center point and a rigid arm with a marking tip. The flat compass uses a rigid flat ruler with an embeddable anchor, such as a nail, on one end and a marking tip on the other that keeps the rigid arm essentially parallel with the marking surface as the surface is being marked. The marking tip is movable along the length of the rigid flat ruler. Multiple rulers can be connected to increase the size of the arc that will be drawn.

Patent publications:

 US 7823294
Asking price:

Make an offer

Rate this patent

Like Great invention
Viewed: 1722 times

Seller:

amaury66 (United States)

Seller's website

Ask a question
or start a negotiation

Contact the seller

Share on social media


















[ Home | List a patent | Manage your account | F.A.Q.|Terms of use | Contact us]

Copyright PatentAuction.com 2004-2017
Page created at 2024-04-20 9:08:15, Patent Auction Time.